package cn.fay.chapter17;

import java.util.Iterator;

import cn.fay.chapter15.Generator;
import cn.fay.chapter16.CountingGenerator;
import cn.fay.chapter16.RandomGenerator;

public class MapDataTest {

	public static void main(String[] args) {
		System.out.println(MapData.map(new Letters(), 11));
		System.out.println(MapData.map(new CountingGenerator.Character(), 
				new RandomGenerator.String(3),8));
		System.out.println(MapData.map(new CountingGenerator.Character(),"Value", 6));
		System.out.println(MapData.map(new Letters(), new RandomGenerator.String(3)));
		System.out.println(MapData.map(new Letters(), "Pop"));
	}
}
class Letters implements Generator<Pair<Integer, String>>,Iterable<Integer>{
	private int size=9;
	private int number=1;
	private char letter='A';
	@Override
	public Pair<Integer, String> next() {
		return new Pair<Integer, String>(number++, ""+letter++);
	}

	@Override
	public Iterator<Integer> iterator() {
		return new Iterator<Integer>() {
			@Override
			public void remove() {
				throw new UnsupportedOperationException();
			}
			
			@Override
			public Integer next() {
				return number++;
			}
			
			@Override
			public boolean hasNext() {
				return number<size;
			}
		};
	}
}
